Interaction of Sulfonated Calix[ n ]arenes with Rhodamine B and Its Application to Determine Acetylcholine in a Real Neutral Aqueous Medium | Zendy

Zhang YongJun | Zendy; Cao WeiXiao | Zendy; Xu Jian | Zendy

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Interaction of Sulfonated Calix[ n ]arenes with Rhodamine B and Its Application to Determine Acetylcholine in a Real Neutral Aqueous Medium

Author(s) -

Zhang YongJun,

Cao WeiXiao,

Xu Jian

Publication year - 2002

Publication title -

chinese journal of chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.28

H-Index - 41

eISSN - 1614-7065

pISSN - 1001-604X

DOI - 10.1002/cjoc.20020200406

Subject(s) - chemistry , rhodamine b , calixarene , aqueous solution , rhodamine , fluorescence , spectroscopy , fluorescence spectroscopy , quenching (fluorescence) , absorption (acoustics) , absorption band , photochemistry , organic chemistry , molecule , physics , photocatalysis , quantum mechanics , acoustics , optics , catalysis

Complexation between Rhodamine B (RB) and sulfonated calix [ n ] arenes (SC n A) were studied by means of UV‐vis spectroscopy and fluorescence spectroscopy. In the presence of sulfonated calix[ n ] arenes, the absorption band of Rhodamine B shifts to longer wavelength and its intensity decreases. The formation of a host‐guest type complex also results in the fluorescence quenching of Rhodamine B. The association constants for the RB/SC n A complexes increase in the order of SC4A < SC6A < SC8A and show dependence on the size of the cavities of the calixarenes. The fluorescence is selectively regenerated by adding acetylcholine. Based on this observation, a method to determine acetylcholine in a real neutral aqueous medium was developed.

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